16397438 has 8 divisors (see below), whose sum is σ = 25261032. Its totient is φ = 7977096.

The previous prime is 16397411. The next prime is 16397467. The reversal of 16397438 is 83479361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 16397395 and 16397404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110720 + ... + 110867.

It is an arithmetic number, because the mean of its divisors is an integer number (3157629).

Almost surely, 2^16397438 is an apocalyptic number.

16397438 is a deficient number, since it is larger than the sum of its proper divisors (8863594).

16397438 is a wasteful number, since it uses less digits than its factorization.

16397438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221626.

The product of its digits is 108864, while the sum is 41.

The square root of 16397438 is about 4049.3750135052. The cubic root of 16397438 is about 254.0535878007.

The spelling of 16397438 in words is "sixteen million, three hundred ninety-seven thousand, four hundred thirty-eight".